tone generation patches

[Christopher Brannon]

Trevor Saunders <trev.saunders at gmail.com> writes:

> I took a quick look through your patch, and it looks fine to me.
> However I wonder why you want to deal with generating tones in each
> module?  It seems to me like we could just have do_tone() deal with
> generating the tone and playing it,  and not have to worry about it in
> each module.

The actual tone generation will be done in a helper function in
module_utils.c.  The module_speak function, which is defined once per
module, will need a case for MSGTYPE_TONE.
I probably wasn't clear about this in my comments.

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